Cleavage fracture assessment for surface-cracked plates fabricated from high strength steels

Abstract This paper presents a combined experimental and numerical investigation to assess the probability of cleavage fracture for surface-cracked plates, using the Weibull stress framework. The proposed procedure defines a critical crack-front segment as the fracture initiation zone using the computed energy release rate. The Weibull-stress based local approach introduces a modified constraint correction function, which allows bidirectional scaling of the fracture toughness in surface-cracked specimens and the idealized 1T small-scale yielding condition. The proposed procedure predicts closely the probability of fracture for surface-cracked specimens made of three different types of steel materials.

[2]  Fumiyoshi Minami,et al.  Method of constraint loss correction of CTOD fracture toughness for fracture assessment of steel components , 2006 .

[3]  Kim Wallin,et al.  The scatter in KIC-results , 1984 .

[4]  Pineau,et al.  Local approach of brittle fracture in metallic welded structures , 2011 .

[5]  Dieter Siegele,et al.  An enhanced probabilistic model for cleavage fracture assessment accounting for local constraint effects , 2010 .

[6]  Claudio Ruggieri,et al.  Calibration of Weibull stress parameters using fracture toughness data , 1998 .

[7]  J. Newman,et al.  Stress-Intensity Factor Equations for Cracks in Three-Dimensional Finite Bodies , 1983 .

[8]  Fong Shih,et al.  Analysis of ductile to cleavage transition in part‐through cracks using a cell model incorporating statistics , 1999 .

[9]  G. Lenkey,et al.  Calibration of three-parameter Weibull stress model for 15Kh2NMFA RPV steel , 2010 .

[10]  Robert H. Dodds,et al.  Coupling of the Weibull stress model and macroscale models to predict cleavage fracture , 2004 .

[11]  E. Smith,et al.  Cleavage fracture in mild steel , 1968 .

[12]  Kim Wallin,et al.  Master curve analysis of the Euro fracture toughness dataset , 2002 .

[13]  Robert H. Dodds,et al.  Calibration of the Weibull stress scale parameter, σu, using the Master Curve , 2004 .

[14]  Xudong Qian,et al.  A compliance-based approach to measure fracture resistance curve for surface cracked steel plates , 2013, International Journal of Fracture.

[15]  A. Pineau,et al.  A local criterion for cleavage fracture of a nuclear pressure vessel steel , 1983 .

[16]  John R. Rice,et al.  Some further results of J-integral analysis and estimates. , 1973 .

[17]  J. Knott,et al.  The relationship between fracture toughness and microstructure in the cleavage fracture of mild steel , 1976 .

[18]  Grzegorz Glinka,et al.  Weight functions for a surface semi-elliptical crack in a finite thickness plate , 1991 .

[19]  C. J. McMahon,et al.  Initiation of cleavage in polycrystalline iron , 1965 .

[20]  Iradj Sattari-Far,et al.  The effect of welding residual stresses on brittle fracture in an internal surface cracked pipe , 2015 .

[21]  Anne Teughels,et al.  Stress Intensity Factors for Semi-Elliptical Surface Cracks With Flaw Aspect Ratio Beyond the ASME XI Limit , 2009 .

[22]  F. Nilsson,et al.  CONSTRAINT BASED EVALUATION OF CRACK GROWTH EXPERIMENTS IN THE TRANSITION REGION , 1996 .

[23]  Distribution free statistical assessment of scatter and size effects in the Euro fracture toughness data set , 2013 .

[24]  A. Pineau,et al.  Application of a local approach to ductile-brittle transition in a low-alloyed steel , 1987 .

[25]  Kim Wallin,et al.  Statistical model for carbide induced brittle fracture in steel , 1984 .

[26]  正樹 白鳥,et al.  任意分布力を受ける表面き裂の応力拡大係数の解析 : 第2報,平板中の半だ円表面き裂に対する影響係数の解析とその応用 , 1986 .

[27]  Claudio Ruggieri,et al.  Transferability of elastic–plastic fracture toughness using the Weibull stress approach: significance of parameter calibration , 2000 .

[28]  Kim Wallin,et al.  The master curve method: a new concept for brittle fracture , 1999 .

[29]  Brian Moran,et al.  Energy release rate along a three-dimensional crack front in a thermally stressed body , 1986, International Journal of Fracture.

[30]  F. Xuan,et al.  Creep constraint analysis and constraint parameter solutions for circumferential surface cracks in pressurized pipes , 2015 .

[31]  J. Heerens,et al.  Development of the Euro fracture toughness dataset , 2002 .

[32]  X. Qian,et al.  Calibration of Weibull parameters using the conventional mechanism-based strain gradient plasticity , 2011 .

[33]  Gao,et al.  A Weibull stress model to predict cleavage fracture in plates containing surface cracks , 1999 .

[34]  Robert H. Dodds,et al.  Temperature dependence of Weibull stress parameters: Studies using the Euro-material , 2006 .

[35]  X. Qian,et al.  A K0‐based calibration procedure for the Weibull stress cleavage model , 2014 .